Flood Control Dams in Montana

Montana has 96 flood control dams, of which 19 carry a high hazard classification. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate.

#	Dam	County	Height (ft)	Hazard	Condition	Year
1	Hungry Horse Dam	Flathead	564	High	Not assessed	1953
2	Fort Peck Dam	McCone	256	High	Not assessed	1940
3	Canyon Ferry Dam	Lewis and Clark	225	High	Not assessed	1954
4	Clark Canyon Dam	Beaverhead	148	High	Not assessed	1964
5	Bullhook Dam	Hill	87	High	Satisfactory	1955
6	Bullhook Lower Diversion	Hill	77	High	Satisfactory	1955
7	Sullivan Dam	Toole	68	High	Satisfactory	1967
8	Cowpath Dam	Toole	65	High	Satisfactory	1967
9	Scott Coulee Dam	Hill	58	High	Satisfactory	1955
10	Panasuk Dam	Roosevelt	57	Significant	Not assessed
11	South Side Detention Dam	Carbon	47	Low	Poor
12	Bar Island Detention Dam	Phillips	44	Low	Poor	1967
13	Depression Detention Dam	Carbon	42	High	Poor	1968
14	Square Butte Detention Dam	Phillips	42	Low	Poor	1967
15	Lark Detention Dam	Phillips	41	Low	Fair	1968
16	Dry Blood Creek Dam	Petroleum	40	High	Fair	1964
17	Christensen (richland)	Richland	38	Low	Not assessed	1970
18	Gutshot Detention Dam	Valley	38	Low	Unsatisfactory	1965
19	South Fork Dry Blood Creek Detention Dam	Petroleum	36	Low	Fair	1963
20	Jawbone Dam #2	Wheatland	36	High	Satisfactory	1966
21	Twin Forks (dawson)	Dawson	35	Low	Not assessed	1961
22	Drag Creek Retention Dam	Petroleum	35	Low	Fair	1964
23	Bass Lake	Ravalli	35	High	Not assessed	1887
24	Triple Crossing	Valley	35	Low	Not assessed	1961
25	Jawbone Dam #1	Wheatland	35	High	Satisfactory	1966
26	Finale Detention Dam	Valley	34	Low	Poor	1965
27	Triple Crossing Detention Dam	Valley	34	Low	Poor	1957
28	Carbone Flood Control Dam	Big Horn	32	High	Satisfactory	2002
29	Upper Baker Dam	Fallon	32	High	Satisfactory	1975
30	Halfpint Detention Dam	Valley	32	Low	Poor	1965
31	Coal Creek Drop Dam	Prairie	31	Low	Satisfactory
32	Dawson Ranch #1	Cascade	30	Low	Not assessed	1948
33	Robinson	Phillips	30	Low	Not assessed	1945
34	Foulweather Detention Dam	Valley	30	Low	Poor	1966
35	Pr-137 King Retention Dam	Phillips	29	Low	Not assessed	1937
36	Sob Detention Dam	Valley	29	Low	Poor	1966
37	Balder Reservoir	McCone	28	Significant	Not assessed	1962
38	Sturgis	Richland	28	Low	Not assessed	1970
39	Neufeld No 1	Valley	28	Low	Not assessed	1966
40	Gull Wing Detention Dam	Phillips	27	Low	Unsatisfactory	1968
41	Sheepshed Detention Dam	Valley	27	Low	Unsatisfactory	1954
42	Black Wolff #3	Carter	25	Low	Not assessed	1964
43	Little Bunny Detention Dam	Phillips	24	Low	Fair	1967
44	Salsbury (richland)	Richland	24	Significant	Not assessed	1965
45	Hard Pan Detention Dam	Valley	24	Low	Unsatisfactory	1954
46	Hard Rock Detention Dam	Valley	24	Low	Poor	1965
47	Br-12 Retention Dam	Blaine	23	High	Satisfactory	1936
48	Tomahawk Detention Dam	Valley	23	Low	Unsatisfactory	1962
49	Apache Dam	Carter	22	Low	Satisfactory
50	California Coulee	Hill	22	Low	Not assessed	1955
51	Iverson Retention Dam	Petroleum	22	Low	Poor	1968
52	Br-43 Retention Dam	Blaine	21	Low	Not assessed	1936
53	Grub Detention Dam	Valley	21	Low	Unsatisfactory	1964
54	Camp Detention Dam	Valley	21	Low	Unsatisfactory	1954
55	Skeeter Detention Dam	Valley	21	Low	Unsatisfactory	1964
56	Longhorn #1/horny Detention Dam	Valley	21	Low	Fair	1966
57	Jello	Carter	20	Low	Not assessed	1886
58	Pr-156 Retention Dam	Phillips	20	Low	Not assessed	1937
59	Desert	Valley	20	Low	Not assessed	1956
60	Corral Junction Detention #2 Dam	Valley	20	Low	Unsatisfactory	1954
61	Br-52 Retention Dam	Blaine	19	Low	Not assessed	1937
62	Tuff Retention Dam	Valley	19	Low	Not assessed	1975
63	Jim Detention Dam	Valley	19	Low	Satisfactory	1964
64	Lori Detention Dam	Valley	19	Low	Unsatisfactory	1964
65	North Beaver Detention Dam	Valley	19	Low	Unsatisfactory	1957
66	Double Crossing Detention Dam	Valley	19	Low	Unsatisfactory	1962
67	Target Detention Dam	Valley	18	Low	Unsatisfactory	1964
68	U.l.t. Detention Dam	Valley	18	Low	Poor	1966
69	Br-45 Retention Dam	Blaine	17	Low	Not assessed	1937
70	Ernie #1 Dam	Musselshell	17	Low	Not assessed
71	Pr-11 Retention Dam	Phillips	17	Low	Not assessed	1942
72	Bugs Detention Dam	Valley	17	Low	Not assessed	1977
73	Golden Gate Dam	Blaine	16	Low	Not assessed
74	Br-55 Retention Dam	Blaine	16	Low	Not assessed	1937
75	Zinger #1	Richland	16	Low	Not assessed	1960
76	Three Trees Detention Dam	Valley	16	Low	Unsatisfactory	1954
77	Dead Horse Detention Dam	Valley	16	Low	Satisfactory	1960
78	Miss Doll Dial Dam	Blaine	15	Low	Not assessed
79	Br-22 Retention Dam	Blaine	15	Low	Not assessed	1936
80	Oliver Detention Dam	Carter	15	Low	Poor	2003
81	Webb #1	Cascade	15	Low	Not assessed	1962
82	Hasland #2	Sheridan	15	Low	Not assessed	1946
83	Vr-72 Dam	Valley	15	Low	Not assessed	2003
84	Long Dam	Carter	14	Low	Fair
85	Bomber	Valley	13	Low	Not assessed	1953
86	Big Rock Detention Dam	Valley	13	Low	Unsatisfactory	1961
87	Jawbone Dike #1	Wheatland	13	High	Satisfactory	1966
88	Waukena Lake Dam	Beaverhead	12	Low	Not assessed	1930
89	Br-8 Retention Dam	Blaine	12	Low	Not assessed	1936
90	Floodly	Garfield	12	Low	Not assessed	1940
91	Walker #2 (dawson)	Dawson	11	Low	Not assessed	1966
92	Cross	Sanders	10	Low	Not assessed	1963
93	Brave Warrior Dam	Blaine	8	Low	Not assessed
94	Spartan/playfair Park Retention Basins	Missoula	8	High	Satisfactory	2003
95	J Jacobsen #2	Daniels	7	Low	Not assessed	1969
96	Flathead County Stormwater Retention Pond	Flathead	0	Significant	Not assessed	1999

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